Which feature allows an administrator to revert back to the previous version of a VM template?

The Content Library feature in VMware provides a centralized repository for managing and storing VM templates, ISOs, and other files. One of its key benefits is the ability to maintain versioning for VM templates. When you update a VM template, the previous version is retained in the Content Library, allowing for easy rollback if needed. This feature is particularly useful for maintaining consistency and compliance across your VM deployments, as it ensures that administrators can revert to a known good state quickly if an updated version introduces issues.

In contrast, VM Snapshots are used for capturing the current state of a virtual machine at a specific point in time, rather than for managing template versions. Storage vMotion allows the migration of VMs from one datastore to another without downtime, but does not pertain to template version management. VMware Tools is a suite of utilities that enhances the performance of the virtual machine but does not involve template versioning capabilities. Thus, leveraging the Content Library enables effective version control of VM templates, making it the correct option.